Method and means for impregnating alpha sheet of material with liquid



July 28, 1925. 1,547,513

C. W. MORDEN METHOD AND MEANS FOR IMPREGNATING 'A SHEET 0F MATERIAL WITH LIQUID Filed July 7. 1922 (Aw/e;

W Afar/617.

Patented July 28 1925.

- UNITED STATES V "1,541,513 PATENT OFFICE.

, CHARLES W. MORDEN, OF WEST LINN, OREGON, ASSIGNOR TO CROWN WILLLAMETTE IPAPER COMPANY, A CORPORATION OF MAINE.

METHOD AND MEANS FOR IMPREGNATING A. SHEET OF MATERIAL WITH LIQUID.

,Appli'cation filed July 27,

To all whom it may concern:

Be it known that I, CHARLES W. Momma, a citizen of the United States, and a resident of West Linn, county of Clackamas, and State of Oregon, have invented new and useful Improvements in Methods and Means for Impregnating a Sheet of Material with Liquid, of which the following is a specification. A

My invention relates to the impregnation of a thin web of material with some liquid, as for example the impregnation of fru t wrappers with a preserving oil.

The object of my invention is to provide an improved method, and improved devices, for doing the work.

Since thesheet of paper used for making Wrappers is usually very thin, the sheet may only be moistened; for, if any undue quantity of liquid be applied to parts of the sheet it is apt to tear at those parts.

I attain my object by atomizing the impregnating liquid to a fog devoid of particles moving with impinging force, and drawing the web across an opening of a chamber filled with the fog. The density of the fog may be varied according to conditions, and degree of impregnation.

The process may be practically carried out by means for impregnating a sheet of material with a liquid comprising, means for atomizing the liquid into a fog, said means adjustable tovary the density of the fog, a badiie located between the sheet and the atomizing means to prevent particles of the liquid being vdirectly impinged upon the sheet, so that the latter is exposed only to the fog of liquid floating in the chamber.

The details of these devices and of my process are hereinafter fully described with reference to the accompanying drawings.

In the drawings:

- Fig. 1 is a longitudinal sectional View of a saturating device in which the atomized liquid is blown into the saturating chamber by a fan;

Fig. 2 is a plan view of this device partially shown in section and illustrates the web passing over the chamber;

Fig. 3 is a longitudinal sectionalview of a saturating device in which bafiies are interposed to prevent unatomized particles of fluid from striking the passing web; and

Fig. 4 is aplan view of the device shown in Fig. 3 with a portion of the web broken 1922. Serial N0. 577,997.

away to disclose the mechanism underneath. The device for impregnating a sheet of material with a liquid consists ofa chamber a which is'open'at the top. The web I) passmg over the open top is sealed by'clips 0 so that the atomized liquid will be drawn into the fan and-be mixed more thoroughly with air and then be blown into the chamber. The passage way into the chamber for the air is arranged so that any particles of liquid which have not been thoroughly atomized willnot strike the ,web but the only particles which will strike it will be those that are small enough that they will be virtually suspended in the air in the form of a fog. v

A modified device'which also prevents the solid particles from striking the moving web is shown in Figs. 3 and 4. Air' is received thru the pipe 9 and liquid thru the pipe h and the outlets g" and h are tapped into nozzles 5 which are connected to both pipes.

The force of the air striking the liquid atomizes the same and the co-mingled product is blown upward. Baflle plates 7' are preferably placed directly'over the outlet of Q the atomizing nozzle to prevent'any particles frombein'g forced against the moving web, and to permit the fog which is suspended in the air solely to strike the web.

These baflie plates preferably are made in the form of inverted cones with flaring pen; dent flanges j whichencompass the enlarged portion or base of the cone.- The pipes 57' and hare mounted in hangers k and Z which are supported by threaded perpendicular 10V rods m and at. These hangers have removablecaps 7c andl which permit the pipes to be readily replaced or adjusted. The battle plates j are mounted on a common rod 0 which is fastened to transverse bars 12 and 9 supported by the threaded rods m and n.

Nuts 1)" and 9 allow the baffle plates to be adju'stediso that they are spaced any desired distance above the atomized nozzles i.

Valves 1" and s in the supply lines provide This air may 65 an adjustment by which to control the amounts'of air and liquid which flow thru' 1. The method of impregnating asheet of absorbent material with liquid consistin' in exposing the sheet to said liquid atomized into a floating fog, situated below said sheet. 2. The method of impregnating a sheet of absorbent material with liquid consisting in converting said liquid by atomization into a floating fog, and exposing the sheet to a substantially quiescent cloudof saidfog, with the sheet arranged substantially out of position for receiving any deposit by gravity from said fog. 3. In an apparatus of the character described the combination of a chamber having anopen side, means for filling said chamber -with a floating fog of atomized liquid, and means for exposing a strip of material to said 0 on side and so arranged as to be substantially out of position for receiving any deposit.

by gravity from said fog. 4. In an apparatus of the character described the com ination of a chamber having 'an 0 en side for receiving a strip of materia means for filling said chamber with posed between the sheet and the atomizing' means. i Y

6. In an apparatus of the character described the combination of a chamber vhaving an open side for receiving a web of material across said open side, means for filling said chamber with a fo of atomized liquid, and a bafile interpose between the p sheet and the atomizing means, said baflie consisting of an inverted cone with aflar- 4 ing pendent flange encompassing the base of the cone.

v 7. In an apparatus of the character described the combination of a chamber hav-' ing an open side for receiving a web of material across said open'side, means for fillin said chamber, with a 0 of atomized 'liqui and a baflie interpose CHARLES W. MORDEN. 

